:root {
    --navy: #0f2a44;
    --navy-light: #1a3a5a;
    --green: #2e7d32;
    --green-light: #3d8c41;
    --gold: #f4b400;
    --gold-light: #ffc107;
    --bg: #f8fafc;
    --card: #ffffff;
    --text: #1e293b;
    --text-light: #64748b;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 24px;
    -webkit-font-smoothing: antialiased;
}

.form-container {
    background: var(--card);
    width: 100%;
    max-width: 640px;
    border-radius: 24px;
    box-shadow: var(--shadow-lg);
    padding: 48px;
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.8);
}

/* Header & Progress */
.form-header {
    text-align: center;
    margin-bottom: 48px;
}

.logo img {
    max-width: 130px;
    margin-bottom: 32px;
    transition: var(--transition);
}

.logo:hover img {
    transform: scale(1.05);
}

.progress-container {
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 100px;
    overflow: hidden;
    box-shadow: inset 0 1px 2px rgba(0,0,0,0.05);
}

.progress-bar {
    width: 20%;
    height: 100%;
    background: linear-gradient(90deg, var(--green), var(--gold));
    border-radius: 100px;
    transition: width 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Steps & Animations */
.step {
    display: none;
    opacity: 0;
    transform: translateX(20px);
    transition: opacity 0.4s ease, transform 0.4s ease;
}

.step.active {
    display: block;
    opacity: 1;
    transform: translateX(0);
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(20px); }
    to { opacity: 1; transform: translateX(0); }
}

@keyframes slideOut {
    from { opacity: 1; transform: translateX(0); }
    to { opacity: 0; transform: translateX(-20px); }
}

h2 {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 12px;
    color: var(--navy);
}

.step-description {
    color: var(--text-light);
    font-size: 16px;
    margin-bottom: 40px;
}

/* Inputs & Forms */
.input-group {
    margin-bottom: 32px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 14px;
    color: var(--navy);
}

input[type="text"],
input[type="email"],
input[type="number"],
select,
textarea {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: 14px;
    font-family: inherit;
    font-size: 16px;
    color: var(--text);
    background-color: #fff;
    transition: var(--transition);
    outline: none;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--gold);
    box-shadow: 0 0 0 4px rgba(244, 180, 0, 0.15);
    background-color: #fff;
}

/* Range Slider */
input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    background: var(--border);
    border-radius: 100px;
    outline: none;
    margin: 24px 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 28px;
    height: 28px;
    background: var(--navy);
    border: 4px solid #fff;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    background: var(--green);
}

.range-labels {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 500;
}

/* Premium Toggles */
.toggle-group {
    background: var(--bg);
    padding: 24px;
    border-radius: 20px;
    margin-bottom: 20px;
    border: 1px solid var(--border);
    transition: var(--transition);
}

.toggle-group:hover {
    border-color: var(--gold);
    background: #fff;
    box-shadow: var(--shadow);
}

.toggle-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.toggle-input {
    display: none;
}

.toggle-label {
    width: 56px;
    height: 30px;
    background: var(--border);
    border-radius: 100px;
    position: relative;
    cursor: pointer;
    transition: var(--transition);
}

.toggle-label::after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    background: white;
    border-radius: 50%;
    top: 4px;
    left: 4px;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow: var(--shadow-sm);
}

.toggle-input:checked + .toggle-label {
    background: var(--green);
}

.toggle-input:checked + .toggle-label::after {
    transform: translateX(26px);
}

/* Card Selection Overhaul */
.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.card-option {
    cursor: pointer;
    perspective: 1000px;
}

.card-option input {
    display: none;
}

.card-content {
    background: #fff;
    border: 2px solid var(--border);
    border-radius: 20px;
    padding: 28px 20px;
    text-align: center;
    transition: var(--transition);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.card-icon {
    font-size: 40px;
    margin-bottom: 16px;
    transition: var(--transition);
    display: flex;
    justify-content: center;
    align-items: center;
}

.card-icon svg,
.card-icon img {
    width: 70px;
    height: 70px;
    object-fit: contain;
}

.card-content h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--navy);
}

.card-content p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.4;
}

.card-option:hover .card-content {
    border-color: var(--gold);
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.card-option input:checked + .card-content {
    border-color: var(--green);
    background: rgba(46, 125, 50, 0.04);
    box-shadow: 0 0 0 4px rgba(46, 125, 50, 0.1);
}

.card-option input:checked + .card-content .card-icon {
    transform: scale(1.2);
}

/* Buttons Styling */
.form-footer {
    display: flex;
    justify-content: flex-end;
    gap: 16px;
    margin-top: 48px;
}

.btn {
    padding: 16px 32px;
    border-radius: 14px;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    font-family: inherit;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--navy);
    color: white;
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--navy-light);
    transform: translateY(-3px) scale(1.02);
    box-shadow: var(--shadow-lg);
}

.btn-primary:active {
    transform: translateY(-1px);
}

.btn-secondary {
    background: #fff;
    color: var(--navy);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--navy);
    background: var(--bg);
    transform: translateY(-2px);
}

.btn-large {
    width: 100%;
    padding: 20px;
    font-size: 18px;
    background: var(--green);
}

.btn-large:hover {
    background: var(--green-light);
}

/* Result Screen Polish */
.result-card {
    text-align: center;
    background: linear-gradient(to bottom, #fff, var(--bg));
    padding: 40px;
    border-radius: 28px;
    border: 1px solid var(--border);
    animation: scaleIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes scaleIn {
    from { transform: scale(0.9); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
}

.error-shake {
    animation: shake 0.4s ease;
}

.result-badge {
    display: inline-block;
    padding: 8px 20px;
    background: var(--gold);
    color: var(--navy);
    border-radius: 100px;
    font-size: 13px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 24px;
    box-shadow: var(--shadow-sm);
}

#planName {
    font-size: 42px;
    margin-bottom: 12px;
    background: linear-gradient(135deg, var(--navy), var(--green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.price-range {
    font-size: 44px;
    font-weight: 900;
    color: var(--navy);
    margin: 32px 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    white-space: nowrap;
    flex-wrap: nowrap;
}

.price-range span {
    font-size: 18px;
    color: var(--text-light);
    font-weight: 500;
}

.plan-features {
    text-align: left;
    list-style: none;
    margin-bottom: 40px;
    background: #fff;
    padding: 32px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

.plan-features li {
    margin-bottom: 16px;
    padding-left: 32px;
    position: relative;
    font-size: 16px;
    font-weight: 500;
}

.plan-features li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    width: 20px;
    height: 20px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='%232e7d32'%3E%3Cpath d='M9 16.17L4.83 12l-1.42 1.41L9 19 21 7l-1.41-1.41z'/%3E%3C/svg%3E");
    background-size: contain;
    background-repeat: no-repeat;
}

.agreement-modal {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.agreement-modal.is-open {
    display: flex;
}

.agreement-modal__backdrop {
    position: absolute;
    inset: 0;
    background: rgba(15, 42, 68, 0.72);
    backdrop-filter: blur(4px);
}

.agreement-modal__panel {
    position: relative;
    z-index: 1;
    width: min(960px, 100%);
    height: min(88vh, 920px);
    background: #fff;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.agreement-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    background: #fff;
}

.agreement-modal__header h2 {
    margin: 0;
    font-size: 18px;
    color: var(--navy);
}

.agreement-modal__close {
    width: 36px;
    height: 36px;
    border: 1px solid var(--border);
    border-radius: 50%;
    background: #fff;
    color: var(--navy);
    font-size: 26px;
    line-height: 1;
    cursor: pointer;
}

.agreement-modal__close:hover {
    border-color: var(--green);
    color: var(--green);
}

#agreementFrame {
    flex: 1;
    width: 100%;
    border: 0;
    background: #f5f6f8;
}

body.agreement-modal-open {
    overflow: hidden;
}

/* Mobile Polish */
@media (max-width: 640px) {
    .form-container {
        padding: 32px 24px;
        border-radius: 0;
    }
    
    body {
        padding: 0;
    }
    
    h2 {
        font-size: 26px;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    .price-range {
        font-size: 36px;
    }

    .agreement-modal {
        padding: 0;
    }

    .agreement-modal__panel {
        width: 100%;
        height: 100vh;
        border-radius: 0;
    }
}